EP0182175B1 - Zerstäuber mit aufgesetzter Verteilerkappe zur Reduzierung der Stickoxid-Emission bei der Verbrennung von flüssigen Brennstoffen - Google Patents

Zerstäuber mit aufgesetzter Verteilerkappe zur Reduzierung der Stickoxid-Emission bei der Verbrennung von flüssigen Brennstoffen Download PDF

Info

Publication number
EP0182175B1
EP0182175B1 EP85113970A EP85113970A EP0182175B1 EP 0182175 B1 EP0182175 B1 EP 0182175B1 EP 85113970 A EP85113970 A EP 85113970A EP 85113970 A EP85113970 A EP 85113970A EP 0182175 B1 EP0182175 B1 EP 0182175B1
Authority
EP
European Patent Office
Prior art keywords
cap
distributor
bores
mixing chamber
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85113970A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0182175A3 (en
EP0182175A2 (de
Inventor
Klaus-Dieter Dipl.-Ing. Rennert
Helmut Ing. Grad. Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Priority to AT85113970T priority Critical patent/ATE53250T1/de
Publication of EP0182175A2 publication Critical patent/EP0182175A2/de
Publication of EP0182175A3 publication Critical patent/EP0182175A3/de
Application granted granted Critical
Publication of EP0182175B1 publication Critical patent/EP0182175B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber

Definitions

  • the invention relates to an atomizer with two mixing chambers and an attached, provided with directional bores distributor cap, in which in the first mixing chamber for atomizing medium and fuel at least one fuel jet is directed at an angle, preferably a right angle, to at least one jet of the atomizing medium and second mixing chamber on the outflow side is delimited by the distributor cap, which is preferably designed as a rotating body.
  • Y-atomizers are part of the applicant's internal status, in which large and small outlet bores alternate at regular intervals or in which one nozzle half has small outlet bores. '' The arrangement of the outlet holes creates fuel-rich and low-fuel combustion zones. In the zone with excess fuel, the resulting stick oxides are reduced to molecular nitrogen.
  • All of the atomizers described above are operated both on the fuel (heating oil) and on the atomizer medium side at high pressures which, depending on the throughput and working range, are between 8 and 20 bar at full load. Because of these high pressures, there are also relatively high overpressures in the nozzle outlet cross section, so that the explosion to the combustion chamber pressure occurs explosively directly behind the outlet of the mouth. This at least partially nullifies one of the requirements for low- NOx combustion, namely a long single fuel jet.
  • a two-stage design of the nozzle combination provides a clear separation between the atomization function - first stage and distribution function - second stage. This arrangement enables both tasks (atomizing and dissolving) to be solved in an optimal manner.
  • the atomization quality is negatively influenced by the different pressure conditions in the mixing channel. As a result, the droplet size spectrum generated is shifted to larger droplets which no longer burn out completely in the flame and increase the soot emission.
  • the object of the invention is to provide a generic atomizer for liquid fuel with which the NO x emission can be reduced.
  • the first mixing chamber is delimited on the outflow side by a nozzle which is preferably provided with the same bores, and in that the bores of the distributor cap are such that there is an asymmetrical distribution of the outlet cross section for the outflow side of the distributor cap with respect to the axis of the distributor cap mixture of fuel and atomizing medium produced in the second mixing chamber.
  • the atomizer of the invention meets all known requirements for NO k - poor combustion in an ideal way.
  • the atomizer has three relaxation levels connected in series. The first expansion takes place when entering the first mixing chamber, the second in a defined manner when the premixing passes through the nozzle arranged between the first mixing chamber and the second mixing chamber. And the third relaxation stage takes place at the mouth cross section of the distributor cap. The pressure there is low, the individual jets remain directed longer. Due to the asymmetrical distribution of the outlet cross section on the distributor cap, a fuel-rich combustion zone with a reducing atmosphere is formed in accordance with the position of the maximum of the outlet cross section.
  • the asymmetrical distribution of the outlet cross section is preferably achieved in that different sectors of the distributor cap are provided with holes of different sizes and / or numbers, seen in the circumferential direction.
  • each half is provided with the same number of holes.
  • the atomizer according to the invention When the atomizer according to the invention is arranged in a vertical combustion chamber wall, it is expedient for a maximum of the outlet cross-sectional distribution to be at the bottom and a minimum at the top. With such an arrangement, a very long flame path is achieved in the more fuel-rich zone compared to a symmetrical atomizer, and there is also a better distribution of the heat load.
  • the stream of the atomizing medium, fed through the central tube (1), is broken down into partial streams and through several, evenly distributed around the circumference of its bottom, before being fed cylindrical bores (2) into a first mixing chamber (3).
  • the fuel (heating oil) is fed coaxially to the atomizing medium through the casing tube (4).
  • the fuel flow is also broken down into partial flows which are connected to the mixing chamber (3) via inlet openings (5).
  • the inlet openings for the partial fuel flows open at right angles into the first mixing chamber.
  • the first mixing chamber is formed from a base part and a nozzle (6).
  • the nozzle bores (7) are uniform and are preferably arranged regularly in the circumference of the nozzle.
  • the mixture of atomizing medium and fuel passes through the nozzle openings of the nozzle (6) into a second mixing chamber (8) which is formed by the nozzle (6) and the distributor cap (9) attached.
  • a second mixing chamber (8) which is formed by the nozzle (6) and the distributor cap (9) attached.
  • holes of different sizes (10, 11) are arranged on one side, smaller holes (10) in one half and larger holes (11) in the other half.
  • the distributor cap and nozzle are attached to the casing tube using a cap nut (12).
  • the atomizer described with reference to Figures 1-3 shows an asymmetrical distribution over two halves, i.e. on 180 ° sectors related to the axis of the distributor cap. Other sector angles are of course covered by the invention. It is also not necessary for the sectors to have the same number of holes. So it is quite conceivable that there are three holes in one sector and four in the other sector.
  • the supply of fuel and atomizing medium can also be interchanged without the operation of the mixing spaces 3 and 8 of the distributor cap 9 being endangered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Chimneys And Flues (AREA)
EP85113970A 1984-11-17 1985-11-02 Zerstäuber mit aufgesetzter Verteilerkappe zur Reduzierung der Stickoxid-Emission bei der Verbrennung von flüssigen Brennstoffen Expired - Lifetime EP0182175B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113970T ATE53250T1 (de) 1984-11-17 1985-11-02 Zerstaeuber mit aufgesetzter verteilerkappe zur reduzierung der stickoxid-emission bei der verbrennung von fluessigen brennstoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3442148 1984-11-17
DE19843442148 DE3442148A1 (de) 1984-11-17 1984-11-17 Zerstaeuberduese mit aufgesetzter verteilerkappe zur reduzierung der stickoxid-emission bei der verbrennung von fluessigen brennstoffen

Publications (3)

Publication Number Publication Date
EP0182175A2 EP0182175A2 (de) 1986-05-28
EP0182175A3 EP0182175A3 (en) 1987-09-09
EP0182175B1 true EP0182175B1 (de) 1990-05-30

Family

ID=6250605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113970A Expired - Lifetime EP0182175B1 (de) 1984-11-17 1985-11-02 Zerstäuber mit aufgesetzter Verteilerkappe zur Reduzierung der Stickoxid-Emission bei der Verbrennung von flüssigen Brennstoffen

Country Status (3)

Country Link
EP (1) EP0182175B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE53250T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3442148A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2180162B1 (en) 2008-10-22 2015-12-23 General Electric Company Gas turbine ejector and method of operation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600550A1 (de) * 1986-01-10 1987-07-16 Krupp Polysius Ag Einblasduese
DE4238736A1 (de) * 1992-11-17 1994-05-19 Babcock Feuerungssysteme Zerstäuber für einen Ölbrenner
DE19812241A1 (de) * 1998-03-20 1999-10-07 Univ Karlsruhe Flüssigkeitszerstäuber für zu zerstäubende Flüssigkeit
KR200210396Y1 (ko) * 2000-07-18 2001-01-15 박석호 산업용 보일러의 연료분사장치
DE102011013950A1 (de) * 2011-03-14 2012-09-20 Air Liquide Deutschland Gmbh Brenner und Verfahren zum Betreiben eines Brenners

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117472A2 (en) * 1983-02-24 1984-09-05 Ente Nazionale Per L'energia Elettrica - (Enel) Atomizer for a liquid fuel burner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB631204A (en) * 1947-03-31 1949-10-28 Delphis Charles Breault Improvements in or relating to a liquid fuel burner
JPS4717395Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1968-07-24 1972-06-16
FR2212497B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-12-31 1976-11-19 Ishikawajima Harima Heavy Ind
US4383649A (en) * 1980-07-18 1983-05-17 John Zink Company Fuel oil atomizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117472A2 (en) * 1983-02-24 1984-09-05 Ente Nazionale Per L'energia Elettrica - (Enel) Atomizer for a liquid fuel burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2180162B1 (en) 2008-10-22 2015-12-23 General Electric Company Gas turbine ejector and method of operation
EP2180162B2 (en) † 2008-10-22 2024-02-14 General Electric Company Gas turbine ejector and method of operation

Also Published As

Publication number Publication date
DE3578005D1 (de) 1990-07-05
DE3442148C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-05-05
ATE53250T1 (de) 1990-06-15
DE3442148A1 (de) 1986-05-28
EP0182175A3 (en) 1987-09-09
EP0182175A2 (de) 1986-05-28

Similar Documents

Publication Publication Date Title
EP0794383B1 (de) Verfahren zum Betreiben einer Druckzerstäuberdüse
DE4438495B4 (de) Einspritzsystem und zugehörige trikoaxiale Einspritzelemente
DE69306039T2 (de) Verbrennungsverfahren mit niedrigem NOx-Gehalt und Brennervorrichtung zur Durchführung des Verfahrens
EP0902233B1 (de) Kombinierte Druckzerstäuberdüse
DE69412484T2 (de) Verbrennungskammer eines gasturbinenmotors
DE69312208T2 (de) Gasturbinenbrennkammer
DE2825431C2 (de) Vorrichtung zur Zufuhr von Luft und Brennstoff in die Brennkammer eines Gasturbinentriebwerkes
DE2834313C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP0620403B1 (de) Misch- und Flammenstabilisierungseinrichtung in einer Brennkammer mit Vormischverbrennung
EP0911583B1 (de) Verfahren zum Betrieb eines Vormischbrenners
DE2345282B2 (de) Verbrennungseinrichtung für Gasturbinentriebwerke
EP0924460B1 (de) Zweistufige Druckzerstäuberdüse
DE19730617A1 (de) Druckzerstäuberdüse
EP0598189A1 (de) Zerstäuber für einen Ölbrenner
EP0347834A2 (de) Brennerkopf für einen Gebläsegasbrenner
EP0692674A2 (de) Verfahren und Vorrichtung zur Brennstoffverteilung in einem sowohl für flüssige als auch für gasförmige Brennstoffe geeigneten Brenner
EP0711953B1 (de) Vormischbrenner
DE69605813T2 (de) Brennstoff-einspritzeinrichtung für verbrennungsgerät
EP0742411B1 (de) Luftzuströmung zu einer Vormischbrennkammer
EP0394800A1 (de) Vormischbrenner für die Heissgaserzeugung
EP0182175B1 (de) Zerstäuber mit aufgesetzter Verteilerkappe zur Reduzierung der Stickoxid-Emission bei der Verbrennung von flüssigen Brennstoffen
EP0924461B1 (de) Zweistufige Druckzerstäuberdüse
EP0762057A1 (de) Einrichtung zur Vermischung von Brennstoff und Luft für Brennkammern von Gasturbinentriebwerken
DE19854382B4 (de) Verfahren und Vorrichtung zur Zerstäubung flüssigen Brennstoffs für eine Feuerungsanlage
DE69304813T2 (de) Verfahren und Vorrichtung zur Zerstäubung einer Flüssigkeit mittels mindestens einem Hilfsfluidum

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19871116

17Q First examination report despatched

Effective date: 19890217

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900530

Ref country code: NL

Effective date: 19900530

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19900530

Ref country code: GB

Effective date: 19900530

Ref country code: FR

Effective date: 19900530

Ref country code: BE

Effective date: 19900530

REF Corresponds to:

Ref document number: 53250

Country of ref document: AT

Date of ref document: 19900615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3578005

Country of ref document: DE

Date of ref document: 19900705

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19901102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19901130

Ref country code: LI

Effective date: 19901130

Ref country code: CH

Effective date: 19901130

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971103

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990901